A person’s present age is two-fifth of the age of his mother. After 8 years, he will be one-half of the age of his mother. How old is the mother at present?
সমাধান
সঠিক উত্তর: Option B
Let the mother's present age be x years.
Then, the person's present age =(2x/5) years.
So, (2x/5 + 8) = ½(x+8)
=> 2(2x + 40) = 5(x + 8)
=> x = 40.
